David J. Portman
CIK: 0002126186
Transaction Breakdown
Open Market Buys (P)1 (100.0%)
High conviction signal
Open Market Sales (S)0 (0.0%)
Position reduction
Option Exercises (M)0 (0.0%)
Derivative conversions
Awards (A)0 (0.0%)
Compensation grants
Other (G, F, J, C, D, …)0 (0.0%)
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
LONA
LeonaBio, Inc.
10% Owner
Discretionary Trading P&L
Holdings
About Portman David J.
Portman David J. (SEC CIK 0002126186) files insider reports with the SEC as 10% Owner of LeonaBio, Inc. (LONA).
Signal8 holds 2 ownership filings by Portman David J. (1 Form 3, 1 Form 4), filed between Sep 3, 2026 and Oct 28, 2026. Those filings report 1 transaction, the latest on Oct 26, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on Portman David J.'s filings is in COLUMBUS, OH.
Recent filings by Portman David J.
- Oct 26, 2026: Open-market purchase of LONA shares (Form 4, code P).
Other insiders filing for LeonaBio, Inc. (LONA)
- PERCEPTIVE ADVISORS LLC, Director
- Callori Fred, Director
- Holles Natalie C., Director
- Silverman Peter B., Director
- Panzara Michael A., Director
- Romano Kelly A, Director